(diff | hist) . .Wikipedia:No original research‎; 12:45. .(-15)‎ . . ‎Hijiri88(talk | contribs)‎ (That would miss the point. It's intuitive that the text of an earlier source that is incorporated into a later source would be considered a primary source. And I don't know if I would say "They rarely cite"; they don't give Harvard style referencing, but.)